need help

[hillbilly426]

the other day i went to start my 400 x and it ran for a sec then quit.i thought i spit a plug so i changed it.all it's doing now is rolling over and poping by the battery .

[hillbilly426]

i've got spark and fuel . i have a new battery coming .
i need it to start before i tear it down for the 416 kit.any advice would be nice.i have searched the forum and got all my ideas for u all thanks

[jesseweaver]

mine was popping like that back by the battery and it was because my battery cable was a little loose and it wasnt getting a good connection. try getting a new ground for the battery, or using a thicker wire.

[drew416ex]

You dong need new cables, just make sure all of your connections to your battery are clean and tight.

[hillbilly426]

Thank you
i will keep you guys postd about my build .gt thunder head studs 11:1piston hc stage 2 c&d mild port and polish new valves and springs .cam chain .Thank you